Finding the Fourth Proportional to 7,012,990.63, 9,677,520.44 and 3,915,710.09
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Solution
The fourth proportional to 7,012,990.63, 9,677,520.44 and 3,915,710.09 is: 5,403,452.88
Step by Step Solution
- Step 1: Write the proportion equation
7,012,990.63 : 9,677,520.44 = 3,915,710.09 : x - Step 2: Convert to fraction form
7,012,990.63/9,677,520.44 = 3,915,710.09/x - Step 3: Cross multiply
7,012,990.63x = 9,677,520.44 × 3,915,710.09 - Step 4: Simplify right side
7,012,990.63x = 37,894,364,433,089.23 - Step 5: Solve for x
x = 37,894,364,433,089.23/7,012,990.63 - Step 6: Final answer
x = 5,403,452.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.